Two-stage air-lift pump



LRIGLING.

TWO-STAGE AIR LIZFT PUMP. APPLICATION FILED AUG. 1. 191a. RENEWED JULY 29,1919. 1,333,279. 3

Patented"Mgr 9 1920.

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Moanfor I Jo/m'fi/ //'n J. RIGLING.

TWO-STAGE Am LIFT PUMP. APPLICATION FILED AUG-1| 1918- RENEWED JULY 29, l9l9.m.-'

1,333,279. Patented Mar. 9, 1920.

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lmllilnm I UNITED stratus PATENT onnrou.

JOHN RIG- LING, DIE PHILADELPHIA, PENNSYLVANIA.

TWO-STAGE AIR-LIFT PUMP.

Specification of Letters Patent. I Patented B131. 9, 1920,

Application filed August 1, 1918, Serial No. 247,812. Renewed July 29, 1919. Serial No. 314,161.

T 0 all whom it may concern State of Pennsylvania, have invented cer-- tain new and useful Improvements in T wo- Stage Air-Lift Pumps, of whichthe following is a specification.

This invention relates to two stage air lift pumps, and belongs to that class of apparatusfor'elevating water by the action of compressed an so applied as'to produce an aerated vertical column of water, lightened in weight and impressed with an upward movement. In explanation ofthe object of this invention it may be stated that this applicant has. had considerable experience with compressed air water elevators,'and has found that in many of them employing float-operated mechanism, the violent actlon of the compressed air sooner orlater pounds'some part out of-service. It is his intention,

therefore, to avoid the use of floats and valve mechanism. Again, with the ordlnaryair 11ft pumps of the same character as tlus 1nvention, with which this applicant is acquainted, the throttle Valve or air valve is of water over the intake.

placed near the top of the well. Thus, the expansionof the air takes place in the airsupply pipe, and enters the mixing chainber at a pressure depending upon the head As the water falls, the air pressure falls corresponding and the' velocity of delivery becomes lowered, and. in many installations wasteful of air. lin this invention the" air is throttled at the lower ends of the pipes in the-well, and at. the point where the air is directed into the water column. The air entrance into the mixing tube may be throttled so'as to deliverthe air at the first stage of the air lift at very near the maximum pressure. In this way, and as is especially important, it is quite practicable to get a high velocity of water and air in the mixing tube to act upon the water in thesecond stage, as will be further explained hereinbelow. It is the object of this invention to produce devices having a mixing tube and an air entrance into the mixing tube controlled in extent by moving To carry out this invention parts are selected and combined as illustrated in the accompanying drawings, wherein Figure 1 represents a well tube in vertical section showing all the parts of this invention assembled therein. Fig. 2 is a view similarto Fig. 1 but taken at'a point of View at. right angles with 't'he view point. in Fig. 1.' 'Fig. 3 is a top plan view of the supporting or surface plate with thc'parts carried thereby,

the air and Water pipes being shown in cross-sect1on. Fig. 4 1s a vertical sectional view, enlarged, of the water inlet attachment hereinafter described, and showing the lower end of the air pipe in connection therewith. Fig. 5 is a cross-section of the 'parts'illus trated in-Fig. 4 upon the broken line 5-5 of Fig. 4:. The indirect broken line t-#:

in Fig. 5 indicates the line upon which is- I taken the section of the water inlet attachment illustratedin Fig. 41 Fig. 6 is a crosssection taken upon the broken line 6-6 of Fig. 4. Throughout the drawings and description the same letter is used to refer to the same part.

Considering the drawings, it will be noted that a surface foundation A carries the supporting plates B and b, which are in this case circular in form. A water pipe D and an air pipe cl pass downwardly through the supporting plate and within the well (asing C. i

Above the plate B the air pipe passes through a carrier piece or block E, and through the end portions of the piece E are passed the jack screws F and 7'. The piece E is adjustably held upon the air pipe by means of the set screws G and g. The jack screws bear upon the top or supporting plate B, as shown in Fig. 2.-

At the lower end of the water pipe. and

as best illustrated in Fig. l. is an attachthat acts as a guide for the movement of the air pipe (Z. The lower portion of the water inlet attachment is the mixing tube J. joined to the upper portion by the fins j and between which water may enter at the top of the mixing tube into the attaclnnent Il.

Fitting movably upon the mixing tulie is the upper portion of the air chamber casing Ii, which has a bell mouth it at its lower end for the entrance of water into the water inlet tube L, which is ordinarily formed integrally with the casing K. At one side, thecasing, K has a projecting hollow pipe connectionM, and the air pipe (1 is provided with threads to engage the connection'M, as.

is also the scale pocket m. The scale pocket opens intothe air chamber of the casing K, and receives solid or foreign particles of any sort which might clog the air chamber.

In explaining the operation of this invention, attention is asked to Figs. 1, 2 and 4. As hasbeen stated the air pipe d is at tached to the air chamber casing K, and if the p'ipe is' raised or lowered by means of the jack screws F and f the air chamber casing will be moved correspondingly. As shown, the upper mouth of the water inlet tube L lies adjacent to the lower mouth of the mixing tube J, and the interval between them marked N in Fig. 4: is termed inthis description the air entrance to the mixlng tube. vIt

' is this entrance that is adjusted by the movement of the air tube, and it may be adjusted so that the maximum air pressure is applied to the water as it enters the mixing tube J from the water inlet tube L in I what is herein termed the first stage of the operation. A very high velocity of air and water mixed rushes through the mixing tube and draws in and carries along with it-additional water entering the attachment H between the fins j. The taking of the water at the top of the mixing tube is the second stage of operation mentioned. The aerated and having a portionv movably fitting the column of water moving upwardly under the force and expansion of the air follows and is discharged by way of the water pipe D, in the usual manner.

Having now described this invention and explained the mode. of its operation, what I claim is:,

1. In. an air lift pump, the combination with a supporting plate, of a water pipe, an air pipe, a water inlet attachment secured to the lower end of the'water pipe and having a mixing tube,an'air chamber casing secured to the lower end of the said air pipe and having a portion movably fitting the said mixing tube, the said casing being provided with an inlet water tube having its inner mouth arranged adjacent to the lower mouth of the said mixing tube, and jack screws acting upon the said supporting plate for the said water and air pipes whereby oneof said pipesmay be raised and lowered with respectto the other and the air entrance into said mixing tube adjusted. v

2. In an air lift pump, thecombination with a supporting plate, of a water pipe, an air pipe, a water inlet attachment 'secured to the lower end of the water pipe and having a mixing tube, an air chambercasing secured to the lower end of the said air pipe said mixing tube, a scale pocket opening into cured to the lower end of the water pipe and having a mixing tube, means connected with the said attachment for guidingthe movement of the lower end of one of said pipes relative to the other, an air chamber=casing secured to the lower end of the said air pipe and having a portion movably fitting the said mixing tube, .the said casing provided with an inlet water tube having its inner mouth arranged adjacent-to the lower mouth of the said mixing tube, and jack screws acting upon the saidsupporting plate for the said water and air pipes whereby one of said pipes may be raised and lowered with respect to the other and the air entrance into the said mixing tube adjusted.

4. In; a'two stage air lift pump, the combination with a supporting plate, of a water pipe, an air pipe, a water inlet attachment secured to the lower end of the said water pipe and having a mixing tube, the said attachment having a water entrance into it located at the top of thesaid mixing tube,

an air chamber casing secured to the lower end of the'said air pipe and having a portion movably fitting the said mixing tube, the said casing being provided with'an in- ,let water tube having 'its inner mouth aring one pipe vertically with respect to the other, and a connecting device joining the lower ends of the said pipes and having a.

water entrance into the water pipe and an air entrance into the water. pipe, the said devicecomprising portions attached to and movable individually with the said pipes, the

'said air entrance being located between the said movable portions of the device.

In testimony whereof I aifix my signature.

' JOHN RIGLING. 

